Strumhold: Guitar Chords

Strumhold is a guitar chord and scale trainer that listens through your microphone and scores every strum.
No account, no tracking.

It's built for one job: making your chord changes clean and fast. You pick two chords. The metronome counts you in. You strum along, and each strum is checked: did the right chord ring, and did it land on the beat? At the end you get an honest number: your success rate at that tempo. Get clean, push the tempo up, repeat.

WHAT IT DOES

• Mic-scored drills: the app listens and marks every strum a hit or a miss, so "am I getting better?" has an answer
• Chord changes are the unit of practice, because the change between two chords is the skill that's actually hard
• Each chord pair keeps a tempo ceiling: the fastest tempo you've held clean, which only moves on real evidence
• Strumming to a metronome, with a count-in, at the tempo you choose
• Chord charts with fingerings for every shape you're asked to play, so you never have to guess
• Scale drills too: box patterns, one note per click, scored the same way
• A Songbook of real songs: see which ones your chords can already play, and what's missing for the rest
• A daily practice queue that mixes what's due for review with what you're learning now
• Practice history: drills per week, your streak, how long you can keep playing without stopping
• A tuner and a calibration step so scoring works on your phone, your mic, your room

WHAT IT ISN'T

Strumhold doesn't teach songs: no lyrics or tabs, and it isn't a course. It's the practice tool you use alongside whatever you're learning from: a teacher, a book, videos. If your chord changes are the thing holding you back, this is the drill rig for exactly that.

The app uses the microphone only while you're drilling, tuning, or calibrating, and the mic indicator on your phone shows exactly when. Audio is scored on your device and isn't uploaded.